JP2000120578A - Cross flow fan and fluid feeding device using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cross flow fan capable of inhibiting the reduction in the air quantity to improve the fan efficiency, and producing a little noise. SOLUTION: With the cross flow fan 10, plural partition plates 12 are arranged in parallel with each other so that their centers are positioned in a straight line, and circular supporting plates 11 are each arranged parallel to the partition plates 12 on both ends of a row of the partition plates 12 so that their centers are respectively positioned in the straight line. Between the respective supporting plates 11 and the partition plates 12 adjacent to the supporting plates 11, and between the partition plates 12 themselves, plural blades 13 are laid over parallel to the straight line in the circumferential direction of the supporting plates 11 and the partition plates 12, rotary shafts 14 are installed to be extended from the outside surfaces of the supporting plates 11, and a thin circular plates 15 thinner than the partition plates 12 are provided parallel and close to the partition plates 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross flow fan constituting a blower together with a drive motor, and an indoor unit, an air purifier, a humidifier, a dehumidifier, a fan heater, a cooling device, and a ventilator of an air conditioner equipped with the blower. The present invention relates to a fluid feeding device such as a device.

[0002]

2. Description of the Related Art First, a general air conditioner and its indoor unit will be described as an example of a fluid feeder. FIG.
Is a configuration diagram of the air conditioner, and an arrow A in the drawing indicates a flow of the refrigerant during the cooling operation. Indoor unit 1 is blower 2
The outdoor unit 4 includes a compressor 5, an outdoor heat exchanger 6, a capillary tube 7, and a four-way valve 8.

[0003] The gaseous refrigerant sent to the outdoor unit 4 is compressed by the compressor 5 to a high temperature and high pressure, and is radiated to outdoor air by the outdoor heat exchanger 6 to become a liquid. Then, the pressure is reduced by passing through the capillary tube 7, and the temperature is rapidly lowered. The liquid refrigerant sent to the indoor unit 1 absorbs heat from indoor air in the indoor heat exchanger 3 to become a gas, and is sent to the outdoor unit 4 again. In the indoor unit 1, the indoor air cooled by the indoor heat exchanger 3 is sent to the room by the blower 2.
The four-way valve 8 of the outdoor unit 4 changes the flow of the refrigerant,
When the direction is opposite to the case shown, the heating operation is performed.

Next, the configuration of the indoor unit 1 will be described.
FIG. 29 shows a side cross section of the indoor unit 1, and FIG. 30 shows the blower 2 in the main body of the indoor unit 1. As shown in FIG. 29, an intake port 1b for taking in indoor air is provided at an upper portion of the main body 1a of the indoor unit 1. The indoor air is cooled by the indoor heat exchanger 3 in the main body 1a, and is sent out to the room by a cross flow fan 10 of the blower 2 from an outlet 1c provided at a lower portion of the main body 1a. As shown in FIG. 30, the blower 2 includes a cross flow fan 10 and the cross flow fan 10.
, And a drive motor 9 for rotating the drive.

Next, a conventional cross flow fan 10 will be described. FIG. 31 is an external view of the cross flow fan 10, and FIG.
FIG. 1 is an external view showing a cross-section of a part of the cross flow fan 10. In FIG. 31, circular support plates 11 are located at both ends of the cross flow fan 10, and a plurality of circular partition plates 12 are located between the support plates 11 at equal intervals. The support plate 11 and the partition plate 12 are arranged parallel to each other such that their centers are located on the straight line L.

[0006] A plurality of blades 13 are passed between the support plate 11 and the adjacent partition plates 12 and between the partition plates 12. As shown in FIG. 32, these wings 13 are elongated flat plates having a gentle curve, and are arranged in the circumferential direction of the support plate 11 and the partition plate 12.
Extend in parallel to

As shown in FIG. 31, a rotation shaft 14 extends from the center of the outer surface of one support plate 11. When the rotating shaft 14 is rotationally driven by the drive motor 9 (see FIG. 30), the cross flow fan 10 rotates to generate wind. The partition plate 12 holds the blades 13 and increases the strength of the entire cross flow fan 10.

[0008] As shown in FIG. 32, a D-shaped hole 12 a is formed in the center of the partition plate 12. In this cross flow fan 10, if the blades 13 are provided at equal intervals, each blade 13
Since the wind noise of the air becomes the same frequency and unpleasant sound is generated, the wings 13 are arranged at irregular intervals in order to prevent this. Therefore, the hole 12a at the center is D-shaped so that the center of rotation and the center of rotation of the cross flow fan 10 do not shift.

FIG. 33 shows a cross flow fan provided with another means for eliminating imbalance.
In this cross flow fan, the hole 12a 'is circular and the partition plate 1
Projection portions 12b are formed at appropriate positions of the two.

[0010]

The conventional cross flow fan 10 described above has the following problems. That is, when the cross flow fan 10 is rotated, speed loss occurs due to windage damage in the vicinity of the support plate 11 and the partition plate 12, and the lost energy is converted into heat and noise. In addition, the turbulence due to the windage propagates, and the wind speed of the internal flow of the fan rapidly decreases near the support plate 11 and the partition plate 12. As a result, downstream of the support plate 11 and the partition plate 12, the wake greatly develops and forms a vortex region, which causes noise.

Further, the wind is blocked by the support plate 11 and the partition plate 12, and is bent in the axial direction. At this time,
A minute vortex is generated, which causes noise. In addition, when the wind is bent in the axial direction, the axial component of the wind speed increases, while the blowing direction component decreases. Therefore, the flow rate in the blowing direction decreases, and the fan efficiency decreases. These problems also apply to an equal-pitch cross flow fan in which the blades 13 are provided at equal intervals.

FIG. 34 is a graph showing the wind speed immediately after the conventional transverse flow fan 10 at each axial position. As shown in the figure, the wind speed decreases near the support plate 11 and the partition plate 12.

In particular, in the unequal-pitch transverse flow fan 10 in which the wings 13 are provided at unequal intervals (see FIG. 32 or FIG. 33), the partition plate 12 is provided with a D-shaped hole 12a or a projection 12b. The wind flowing near 12 has a pulsating wind speed fluctuation in synchronization with the rotation of the cross flow fan 10. The resulting disturbance causes noise. Further, since the wind speed is lost due to the wind speed fluctuation, the air volume is reduced, and the fan efficiency is reduced.

From these facts, a conventional fluid feeder including the blower 2 including the unequal-pitch cross flow fan 10 and the drive motor 9, for example, an indoor unit of an air conditioner also has the same problem. That is, the noise is loud and the efficiency is low.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a cross-flow fan which suppresses a decrease in air volume and improves fan efficiency, and has low noise. Another object of the present invention is to provide a fluid feeder with good efficiency and low noise.

[0016]

According to a first aspect of the present invention, there is provided a cross flow fan having a plurality of circular partition plates having a hole at a central portion, the centers of which are located on a straight line. It is arranged in parallel with each other, and circular support plates are arranged at both ends of the partition plate row one by one in parallel with the partition plates so that their centers are located on the straight line, and are adjacent to each support plate and the support plate. Between the partition plate and between the partition plates, a plurality of blades are passed in parallel to the straight line while being arranged in the circumferential direction of the support plate and the partition plate, and rotate around the outer surface of the support plate. In a cross flow fan having an extended shaft, a thin disk thinner than the partition plate is provided on both sides of each partition plate and on one side of both support plates.
It is characterized by being provided in parallel with the partition plate one by one.

According to a second aspect of the present invention, there is provided a cross flow fan comprising a plurality of circular partition plates each having a hole in the center thereof, which are arranged in parallel with each other so that the centers of the plurality of circular partition plates are located on a straight line. The support plates are arranged one by one in parallel with the partition plates such that their centers are located on the straight line, and a plurality of support plates are provided between each support plate and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan in which a plurality of blades are passed in parallel with the straight line while being arranged in the circumferential direction of the support plate and the partition plate, and the rotation axis is extended on the outer surface of the support plate, On one side, thin disks thinner than the partition plate are provided one by one so as to be parallel to the partition plate.

According to a third aspect of the present invention, there is provided a cross flow fan, wherein a plurality of circular partition plates having a hole in the center are arranged in parallel with each other so that the centers of the plurality of circular partition plates are located on a straight line. The support plates are arranged one by one in parallel with the partition plates such that their centers are located on the straight line, and a plurality of support plates are provided between each support plate and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan in which a plurality of blades are passed in parallel with the straight line while being arranged in the circumferential direction of the support plate and the partition plate, and the rotation axis is extended on the outer surface of the support plate, Between the partition plates adjacent to the support plate and between the partition plates, a plurality of thin disks thinner than the partition plates are provided at equal intervals so as to be parallel to the partition plates. And

According to a fourth aspect of the present invention, there is provided a cross flow fan, wherein a plurality of circular partition plates having a hole in the center are arranged in parallel with each other so that the centers of the plurality of circular partition plates are located on a straight line. The support plates are arranged one by one in parallel with the partition plates such that their centers are located on the straight line, and a plurality of support plates are provided between each support plate and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan in which a plurality of blades are passed in parallel with the straight line while being arranged in the circumferential direction of the support plate and the partition plate, and the rotation axis is extended on the outer surface of the support plate, A plurality of thin disks thinner than the partition plates are provided at unequal intervals between the partition plates adjacent to the support plate and between the partition plates so as to be parallel to the partition plates. .

According to a fifth aspect of the present invention, there is provided a cross flow fan, wherein a plurality of circular partition plates having a hole in the center are arranged in parallel with each other so that the centers of the plurality of circular partition plates are located on a straight line. The support plates are arranged one by one in parallel with the partition plates such that their centers are located on the straight line, and a plurality of support plates are provided between each support plate and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan in which a plurality of blades are passed in parallel with the straight line while being arranged in the circumferential direction of the support plate and the partition plate, and the rotation axis is extended on the outer surface of the support plate, at least one of the On both sides of the partition plate adjacent to the plate, thin disks thinner than the partition plate are provided one by one so as to be parallel to the partition plate.

According to a sixth aspect of the present invention, there is provided a cross flow fan, wherein a plurality of circular partition plates having a hole in the center are arranged in parallel with each other so that the centers thereof are located on a straight line. The support plates are arranged one by one in parallel with the partition plates such that their centers are located on the straight line, and a plurality of support plates are provided between each support plate and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan in which a plurality of blades are passed in parallel with the straight line while being arranged in the circumferential direction of the support plate and the partition plate, and the rotation axis is extended on the outer surface of the support plate, at least one of the On one side of the partition plate adjacent to the plate, thin disks thinner than the partition plate are provided one by one so as to be parallel to the partition plate.

According to a seventh aspect of the present invention, there is provided a cross flow fan comprising a plurality of circular partition plates each having a hole at the center thereof, which are arranged in parallel with each other such that the centers of the plurality of circular partition plates are located on a straight line. The support plates are arranged one by one in parallel with the partition plates such that their centers are located on the straight line, and a plurality of support plates are provided between each support plate and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan in which a plurality of blades are passed in parallel with the straight line while being arranged in the circumferential direction of the support plate and the partition plate, and the rotation axis is extended on the outer surface of the support plate, at least one of the A plurality of thin disks thinner than the partition plate are provided at equal intervals between the plate and the partition plate adjacent to the support plate so as to be parallel to the partition plate.

In the cross flow fan according to the present invention, a plurality of circular partition plates having a hole in the center are arranged in parallel with each other so that the centers of the plurality of circular partition plates are located on a straight line. The support plates are arranged one by one in parallel with the partition plates such that their centers are located on the straight line, and a plurality of support plates are provided between each support plate and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan in which a plurality of blades are passed in parallel with the straight line while being arranged in the circumferential direction of the support plate and the partition plate, and the rotation axis is extended on the outer surface of the support plate, at least one of the A plurality of thin disks thinner than the partition plate are provided at irregular intervals between the plate and the partition plate adjacent to the support plate so as to be parallel to the partition plate.

According to a ninth aspect of the present invention, there is provided a fluid feeder including a blower including the cross flow fan according to any one of the first to eighth aspects and a drive motor for driving the cross flow fan.

In the cross flow fan according to any one of the first to eighth aspects, since the thin disk is provided adjacent to the partition plate, the wind bent in the axial direction by the partition plate is entrained in the rotation of the thin disk. , The flow is returned in the blowing direction. Therefore, the velocity loss on the downstream side of the partition plate is minimized, and the wake does not easily develop.

Further, since the thin disk prevents turbulence caused by a speed defect near the partition plate from propagating to other parts, it is possible to suppress a decrease in wind speed due to windage loss of the internal flow of the fan. In particular, in the case of a non-uniform pitch cross flow fan, the thin circular plate prevents the turbulence of the wind flow generated near the partition plate from being propagated by the D-shaped holes and projections of the partition plate.

In the cross flow fans according to the second and sixth aspects, since the thin disk is provided on one side of the partition plate, the direction of the air sent from between the cascades is determined to some extent by the arrangement.

In the cross flow fans according to the third, fourth, seventh, and eighth aspects, a plurality of thin circles are provided between the support plate and the partition plate adjacent to the support plate, and between the partition plates. Since the plates are arranged, the flow between the cascades is rectified, and turbulence and turbulence generated in the wake of the blades can be suppressed.

In the cross flow fans according to the fourth and eighth aspects, the flow rate between the thin disks can be adjusted by arranging a plurality of thin disks provided at unequal intervals.

[0030]

Embodiments of the present invention will be described below with reference to the drawings. Note that the configuration other than that described in each embodiment is the same as that of the related art in FIGS. 31 and 32, and in each figure, the same members as those shown in FIGS. 31 and 32 are denoted by the same reference numerals. .

First, a first embodiment according to the present invention will be described. FIG. 1 is an external view of a cross flow fan 10 of the present embodiment. .., 15 are thin disks thinner than the support plate 11 and the partition plate 12, and one side of both support plates 11, 11 and each partition plate 1.
Are provided adjacent to each other on both sides. At this time, the thin disk 15 is parallel to the support plate 11 and the partition plate 12.

The distance between the support plates 11, 11 and the partition plates 12, 12 adjacent thereto and the distance between the partition plates 12,... Are the same, and in FIG. It is indicated by L1. In addition, both support plates 11, 11 or each partition plate 1
Are the same, and are indicated by L2 in FIG. L2 satisfies the range of 3 mm ≦ L2 ≦ 20 mm (1) or 0.04 L1 ≦ L2 ≦ 0.3L1 (2).

In particular, it is preferable to satisfy 5 mm ≦ L 2 ≦ 10 mm (3) or 0.06 L 1 ≦ L 2 ≦ 0.13 L 1 (4).

In the cross flow fan 10 of the present embodiment, the wind bent in the axial direction by the partition plate 12 is entrained by the rotation of the thin disk 15 and the flow is returned to the blowing direction. Thereby, the speed loss behind the partition plate 12 is minimized. In addition, since the thin disk 15 prevents the turbulence caused by the speed loss near the partition plate 12 from propagating to other regions, a decrease in the wind speed of the internal flow of the fan can be suppressed.

FIG. 2 is a graph showing the average wind speed and the wind speed fluctuation of the internal flow of the fan with respect to the distance from the partition plate 12.
In the case of a conventional cross flow fan, a decrease in wind speed and an increase in wind speed fluctuation are observed near the partition plate 12. On the other hand, in the cross flow fan of the present embodiment, the wind speed only slightly decreases and the wind speed fluctuation is small.

FIG. 3 is a graph showing the wind speed of the internal flow of the cross flow fan 10 with respect to the rotation angle of the cross flow fan 10, wherein (a) the vicinity of the partition plates 12 and (b) the central portion between the partition plates 12. It is measured. For a conventional cross flow fan,
In the vicinity of the partition plate 12, a pulsating turbulence occurred in synchronization with the rotation of the cross flow fan due to the D-shaped hole 12a (see FIG. 32) or the protruding portion 12b (see FIG. 33) of the partition plate 12. In the cross flow fan 10 of the present embodiment, as described above, since the thin disk 15 prevents the disturbance caused by the speed defect in the partition plate 12 from propagating to other regions, the disturbance does not occur.

FIG. 4 is a graph showing (a) noise value and (b) fan efficiency for each air volume. Cross flow fan 1 of the present embodiment
In the case of No. 0, since the turbulence and the propagation of the wind in the vicinity of the partition plate 12 were suppressed by the thin disk 15, the wake did not easily develop and the noise was reduced. In addition, the reduction in the flow rate in the blowing direction and the speed loss in the partition plate 12 were suppressed, so that the fan efficiency was improved.

The thin disk 15 may have a hole formed in the center or may have no hole. In particular,
If a hole is formed in the center, the influence of friction and the like is small, and the fan performance is not easily reduced.

Next, a second embodiment according to the present invention will be described. FIG. 5A is an external view of the cross flow fan 10 of the present embodiment, and FIG. 5B shows the wind speed distribution in the axial direction. In this cross flow fan 10, a thin circular plate 15,... Is provided close to one side (right side) of the support plate 11 at the left end in the figure and each of the partition plates 12,.
. Are provided one by one in parallel with the support plate 11 and the partition plate 12. In FIG. 5A, L2 is (1) as in the first embodiment.
Or it satisfies (2), and particularly preferably satisfies (3) or (4).

Therefore, the cross flow fan 10 of the present embodiment is
In the portion where the thin disk 15 is provided, the development of the wake and the decrease in the flow rate of the wind are suppressed as in the first embodiment, so that the noise is reduced and the fan efficiency is improved. FIG.
(b) As shown by the middle arrow B, by providing the thin disk 15 on the right side of the partition plate 12, the generated wind can have a slightly leftward wind direction.

The cross flow fan shown in FIGS. 6 to 8 has a thin disk 1 on one side of each of the partition plates 12,... As in the second embodiment.
This embodiment is provided with 5,..., And is configured to have a different wind direction from the second embodiment. In each figure, (a) is an external view of the cross flow fan, and (b) shows the wind speed distribution in the axial direction. In the cross flow fan shown in FIG. 6A, a thin disk 15,... Is provided on the right side of the support plate 11 and the left side of each partition plate 12,. The middle, arrow B) has a slightly rightward wind direction.

In the cross flow fan shown in FIG. 7 (a), a thin disk 15,... Is provided on the left side of the right end support plate 11 and the partition plate 12 on the right side of the center, and the left end support plate 11 and the center The thinner disk 15,... Is provided on the right side of the partition plate 12 on the left side. Therefore, the generated wind is directed outward from the center (arrow B in FIG. 7B). 8 (a) is provided with thin disks 15,... On the right side of the partition plates 12,... On the right side of the center, and on the left side of the center. .. Are provided on the left side. Therefore, the generated wind is directed to the center (arrow B in FIG. 8B).

As described above, the thin disk 1 is attached to one side of the partition plate 12.
In the cross flow fan provided with 5, the wind direction can be controlled by its arrangement. Of course, the arrangement of the thin disks 15 is not limited to the cross flow fans shown in FIGS.

Next, a third embodiment according to the present invention will be described. FIG. 9 is an external view of the cross flow fan 10 of the present embodiment. In this cross flow fan 10, both support plates 11, 11
Are provided at regular intervals by 10 thin disks 15,... Between the partition plates 12, 12 adjacent thereto and between the partition plates 12,. At this time, the thin disk 15 is parallel to the support plate 11 and the partition plate 12.

In FIG. 9, the interval between the thin disks 15 is indicated by L3. L3 satisfies 3 mm ≦ L3 ≦ 20 mm (5) or 0.04 L1 ≦ L3 ≦ 0.3 L1 (6).

In particular, it is preferable to satisfy 5 mm ≦ L 3 ≦ 10 mm (7) or 0.06 L 1 ≦ L 3 ≦ 0.13 L 1 (8).

The cross flow fan 10 of the present embodiment has a thin disk 1
In the portion where 5 is provided, the development of the wake and the decrease in the flow rate of the wind are suppressed as in the first embodiment. Further, between the support plate 11 and the partition plate 12 adjacent to the support plate 11 and between the support plate 11 and the partition plate 12.
Since a plurality of thin disks 15 are arranged between them, the flow between the rows of the blades 13 is rectified, and the generation of vortices and turbulence behind the blades 13 can be suppressed. Therefore, noise reduction and improvement in fan efficiency are further achieved.

In this embodiment, the thin disk 15 is placed between L1.
Are provided in units of 10, but any number may be provided as long as the condition (5) or (6) is satisfied.

Next, a fourth embodiment according to the present invention will be described. FIG. 10A is an external view of the cross flow fan 10 of the present embodiment, and FIG. 10B is an enlarged view of one end thereof. In this cross flow fan 10, between the two support plates 11, 11 and the partition plates 12, 12 adjacent thereto, and each partition plate 12,
Are provided at irregular intervals at intervals of four thin disks 15,. At this time, the thin disk 15 is parallel to the support plate 11 and the partition plate 12.

As shown in FIG. 10 (b), the support plate 11 and the partition plate 12 are connected to a thin disk (the thin disk 15
The distance to a) is L2 as in the first embodiment. Assuming that the distance from the thin disk 15a to the thin disk adjacent thereto (the thin disk 15b in the figure) is L4 and the distance between the thin disks 15b is L5, these L2, L4, L5 Satisfies L2 <L4 <L5 (9). L2 is (1) or L2 as in the first embodiment.
It satisfies (2), and particularly preferably satisfies (3) or (4).

The cross flow fan 10 of the present embodiment has a thin disk 1
In the portion where 5 is provided, the development of the wake and the decrease in the flow rate of the wind are suppressed as in the first embodiment. Further, between the support plate 11 and the partition plate 12 adjacent to the support plate 11 and between the support plate 11 and the partition plate 12.
Since a plurality of thin disks 15 are arranged between the blades, the flow between the rows of the blades 13 is rectified, and the generation of vortices and turbulence behind the blades 13 can be suppressed. Therefore, noise reduction and improvement in fan efficiency are further achieved. Further, depending on the arrangement of the thin disk 15, the thin disk 15
Since the flow rate of the inter-wind can be adjusted, the wind speed and the air volume of the cross flow fan 10 can be made uniform in the axial direction.

In this embodiment, the thin disk 15 is placed between L1.
Are provided four by four, but any number may be provided as long as the distance between the thin disks 15 increases toward the center and L2 satisfies (1) or (2).

Next, fifth to twelfth embodiments according to the present invention will be described. These embodiments have a configuration in which the thin disk 15 is provided only at the end of the cross flow fan 10 in which the velocity loss is large and the wake easily develops compared to other portions.

FIG. 11 is an external view of the cross flow fan 10 of the fifth embodiment. As shown in the figure, thin disks 15 are provided one by one on one side of the right end support plate 11 and on both sides of the partition plate 12 adjacent to the support plate 11. At this time, the thin disk 15 is parallel to the support plate 11 and the partition plate 12.

FIG. 12 is an external view of the cross flow fan 10 of the sixth embodiment. The same thin disk 15 as in the fifth embodiment is arranged at both ends of the cross flow fan 10.
Note that L2 in FIGS. 11 and 12 is the same as in the first embodiment.
It satisfies (1) or (2), and particularly preferably satisfies (3) or (4).

The cross flow fan 1 of the fifth and sixth embodiments
In the case of 0, since the thin disk 15 is provided at the end, the development of the wake and the decrease in the flow rate of the wind can be suppressed at that portion as in the first embodiment. Since the end of the cross flow fan 10 has a large speed loss as compared with the other parts and the wake is easy to develop, the reduction of the noise and the improvement of the fan efficiency can be sufficiently achieved.

FIG. 13 is an external view of the cross flow fan 10 of the seventh embodiment. As shown in the drawing, thin disks 15 are provided one by one on one side of the right end support plate 11 and on the side of the partition plate 12 adjacent to the support plate 11 facing the support plate 11. At this time, the thin disk 15 is supported by the support plate 11 and the partition plate 1.
Parallel to 2.

FIG. 14 is an external view of the cross flow fan 10 of the eighth embodiment. The same thin disk 15 as in the seventh embodiment is arranged at both ends of the cross flow fan 10.
L2 in FIGS. 13 and 14 is the same as in the first embodiment.
It satisfies (1) or (2), and particularly preferably satisfies (3) or (4).

The cross flow fan 1 of the seventh and eighth embodiments
In the case of 0, since the thin disk 15 is provided at the end, the development of the wake and the decrease in the flow rate of the wind can be suppressed at that portion as in the first embodiment. Since the end of the cross flow fan 10 has a large speed loss as compared with the other parts and the wake is easy to develop, the reduction of the noise and the improvement of the fan efficiency can be sufficiently achieved.

Similar to the above-described seventh embodiment, examples of other cross flow fans provided with the thin disk 15 on one side of the partition plate 12 adjacent to the right end support plate 11 are shown in FIGS. As shown in FIG. Also, as in the eighth embodiment, FIG.
FIGS. 16, 18, 20, and 22 show examples where the thin disks 15 of the cross flow fan shown in FIGS. 5, 17, 19, and 21 are arranged at both ends of the cross flow fan.

FIG. 23 is an external view of the cross flow fan 10 of the ninth embodiment. As shown in the figure, ten thin disks 15,... Are provided at equal intervals between the right end support plate 11 and the partition plate 12 adjacent to the support plate 11. At this time, thin disk 1
5 is parallel to the support plate 11 and the partition plate 12.

FIG. 24 is an external view of the cross flow fan 10 according to the tenth embodiment.
Are arranged at both ends of the cross flow fan 10.
Note that L3 in FIGS. 23 and 24 is the same as in the third embodiment.
It satisfies (5) or (6), and particularly preferably satisfies (7) or (8).

The cross flow fan 10 of the ninth and tenth embodiments
In the portion where the thin disk 15 is provided, the development of the wake and the decrease in the flow rate of the wind are suppressed as in the first embodiment. Also,
The flow between the rows of the blades 13 is rectified by the plurality of thin disks 15, so that vortices and turbulence behind the blades 13 can be suppressed. Therefore, reduction of noise and improvement of fan efficiency can be achieved. In this embodiment, ten thin disks 15 are provided between L1. However, any number of thin disks 15 may be provided as long as they satisfy (5) or (6).

FIG. 25 shows a cross flow fan 10 according to the eleventh embodiment.
FIG. As shown in the drawing, between the right end support plate 11 and the partition plate 12 adjacent to the support plate 11, the distance between the thin disks 15 becomes larger as the four thin disks 15 move toward the center. Is provided. At this time, the thin disk 15 is parallel to the support plate 11 and the partition plate 12. FIG. 26 is an external view of the cross flow fan 10 of the twelfth embodiment.
The same arrangement of the thin disks 15 as in the embodiment is made at both ends of the cross flow fan 10.

In FIGS. 25 and 26, L2, L4 and L5 are:
As in the fourth embodiment, (9) is satisfied. Further, L2 satisfies (1) or (2) as in the first embodiment, and particularly preferably satisfies (3) or (4).

The cross flow fan 1 of the eleventh and twelfth embodiments
At 0, the development of the wake and the decrease in the flow rate of the wind are suppressed at the portion where the thin disk 15 is provided, as in the first embodiment. Further, the flow between the rows of the blades 13 is rectified by the plurality of thin disks 15, so that the occurrence of vortices and turbulence behind the blades 13 can be suppressed. Therefore, reduction of noise and improvement of fan efficiency can be achieved. Furthermore, since the flow rate between the thin disks 15 can be adjusted by the arrangement of the thin disks 15, the wind speed and the air volume at the end of the cross flow fan 10 can be made uniform in the axial direction.

In this embodiment, the thin disk 15 is placed between L1.
Are provided four by four, but any number may be provided as long as the distance between the thin disks 15 increases toward the center and L2 satisfies (1) or (2).

As in the fifth, seventh, ninth, and eleventh embodiments described above, even when the thin disk 15 is provided only at one end of the cross flow fan 10, the end of the cross flow fan 10 Since the turbulence and the wake of the flow are large, effects such as reduction of noise and improvement of fan efficiency can be sufficiently obtained. In particular, in this case, the number of thin disks 15 is small, so that the cost can be reduced. On the other hand, in the sixth, eighth, tenth, and twelfth embodiments described above, since the thin disks 15 are provided at both ends of the cross flow fan 10, the fifth, seventh, ninth,
In addition, the above-described effect can be further obtained as compared with the eleventh embodiment.

The fifth, seventh, ninth, and first embodiments described above
In the embodiment, the thin disk 15 is provided at the right end of the cross flow fan 10, but the thin disk 15 may be provided only at the left end.

Next, an embodiment of the fluid feeder according to the present invention will be described. The fluid feeder includes a blower including a cross flow fan and a drive motor, and is configured to send out a fluid by the blower. For example, it is an air purifier, a humidifier, a dehumidifier, a fan heater, a cooling device, a ventilation device, and the like. The fluid feeder of the present embodiment is an indoor unit of an air conditioner, and is provided with the cross flow fan 10 (see FIG. 1) of the first embodiment as a cross flow fan. FIG.
Indicates a blower 2 in the main body 1a of the indoor unit 1.

Since the indoor unit 1 of the present embodiment includes the cross flow fan 10 of the first embodiment, it is a quiet indoor unit with reduced noise. Further, since the cross flow fan 10 has improved fan efficiency, it is an efficient indoor unit that achieves energy saving.

[0072]

As described above, in the cross flow fan according to any one of the first to eighth aspects, a decrease in the wind speed and a decrease in the amount of air in the blowing direction caused by the partition plate are suppressed, and the fan efficiency is improved. Further, the wake is difficult to develop, and the turbulence of the wind flow does not propagate to other places, so that noise is reduced. Particularly, since the turbulence of the flow of the wind generated in the vicinity of the partition plate is not propagated by the D-shaped holes and the projections of the partition plate, these effects can be further obtained.

Further, in the cross flow fan according to the second and sixth aspects, the wind direction from between the cascades is determined to some extent by the arrangement of the partition plates, so that a desired wind direction can be obtained.

In the cross flow fans according to the third, fourth, seventh, and eighth aspects, the flow between the cascades is rectified, and turbulence and turbulence generated in the wake of the blades can be suppressed. Thus, noise reduction and fan efficiency improvement are further achieved.

In particular, in the cross flow fan according to the fourth and eighth aspects, since the flow rate between the thin disks can be adjusted by the arrangement of the thin disks, a desired flow rate can be obtained.

Further, in the cross flow fan according to the fifth to eighth aspects, since the thin disk is provided only at the end where the turbulence of the wind flow and the development of the wake are particularly large, the noise can be reduced and the fan efficiency can be reduced. Is sufficiently achieved, and the number of thin disks is reduced, so that the cost is reduced. In particular, if a thin disk is provided only at one end of the cross flow fan, the cost can be further reduced. Further, when thin disks are provided at both ends of the cross flow fan, the above-described effects can be obtained more than when thin disks are provided only at one end.

Further, since the fluid feeder according to the ninth aspect is constituted by a blower provided with the cross flow fan according to any one of the first to eighth aspects, good efficiency, energy saving is achieved and noise is reduced. It will be small.

[Brief description of the drawings]

FIG. 1 is an external view of a cross flow fan according to a first embodiment of the present invention.

FIG. 2 is a graph showing average wind speed and wind speed fluctuation of an internal flow with respect to a distance from a partition plate in the cross flow fan of the first embodiment.

FIG. 3 is a graph showing a flow rate of an internal flow with respect to a rotation angle of the cross flow fan in the cross flow fan of the first embodiment.

FIG. 4 is a graph showing (a) a noise value and (b) fan efficiency with respect to an airflow of the cross flow fan in the cross flow fan of the first embodiment.

FIG. 5A shows a cross flow fan according to a second embodiment of the present invention;
Exterior view and (b) wind speed distribution.

FIGS. 6A and 6B show another embodiment according to the cross flow fan of the second embodiment, and FIG.

FIGS. 7A and 7B show another embodiment according to the cross flow fan of the second embodiment, and FIG.

8A and 8B show another embodiment according to the cross flow fan of the second embodiment, and FIG.

FIG. 9 is an external view of a cross flow fan according to a third embodiment of the present invention.

FIG. 10 shows a cross flow fan according to a fourth embodiment of the present invention.
(a) An external view and (b) a partially enlarged view.

FIG. 11 is an external view of a cross flow fan according to a fifth embodiment of the present invention.

FIG. 12 is an external view of a cross flow fan according to a sixth embodiment of the present invention.

FIG. 13 is an external view of a cross flow fan according to a seventh embodiment of the present invention.

FIG. 14 is an external view of a cross flow fan according to an eighth embodiment of the present invention.

FIG. 15 is an external view showing another embodiment according to the cross flow fan of the seventh embodiment.

FIG. 16 is an external view showing another embodiment according to the cross flow fan of the eighth embodiment.

FIG. 17 is an external view showing another embodiment according to the cross flow fan of the seventh embodiment.

FIG. 18 is an external view showing another embodiment according to the cross flow fan of the eighth embodiment.

FIG. 19 is an external view showing another embodiment according to the cross flow fan of the seventh embodiment.

FIG. 20 is an external view showing another embodiment according to the cross flow fan of the eighth embodiment.

FIG. 21 is an external view showing another embodiment according to the cross flow fan of the seventh embodiment.

FIG. 22 is an external view showing another embodiment according to the cross flow fan of the eighth embodiment.

FIG. 23 is an external view of a cross flow fan according to a ninth embodiment of the present invention.

FIG. 24 is an external view of a cross flow fan according to a tenth embodiment of the present invention.

FIG. 25 is an external view of a cross flow fan according to an eleventh embodiment of the present invention.

FIG. 26 is an external view of a cross flow fan according to a twelfth embodiment of the present invention.

FIG. 27 is a configuration diagram showing one embodiment of a fluid feeder according to the present invention.

FIG. 28 is a configuration diagram of an air conditioner.

FIG. 29 is a side sectional view of an indoor unit of the air conditioner.

FIG. 30 is a configuration diagram showing a blower in a main body of the indoor unit.

FIG. 31 is an external view of a conventional cross flow fan.

FIG. 32 is a partially cutaway view of a conventional cross flow fan.

FIG. 33 is a partially cutaway view of another conventional cross flow fan.

FIG. 34 is a graph showing the wind speed immediately after the conventional cross flow fan at each position in the axial direction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Indoor unit of an air conditioner 2 Blower 3 Indoor heat exchanger 4 Outdoor unit 5 Compressor 6 Outdoor heat exchanger 7 Capillary tube 8 Four-way valve 9 Drive motor 10 Cross flow fan 11 Support plate 12 Partition plate 12a D-shaped hole 12b Projection 13 Wings 14 Rotation axis 15 Thin disk

Claims (9)

[Claims] 1. A plurality of circular partition plates having a hole in the center are arranged in parallel with each other such that the centers of the plurality of circular partition plates are located on a straight line, and one circular support plate is provided at each end of the partition plate row. A plurality of sheets are arranged in parallel with the partition plate so that their centers are located on the straight line, between the support plates and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan, wherein wings are passed in parallel to the straight line while being arranged in a circumferential direction of the support plate and the partition plate, and a rotation axis is extended on an outer surface of the support plate, A thin disk thinner than the partition plate is provided on each of both sides of the support plate and on one side of the support plates, one by one in parallel with the partition plate. 2. A plurality of circular partition plates having a hole in the center thereof are arranged in parallel with each other such that the centers of the plurality of circular partition plates are located on a straight line, and one circular support plate is provided at each end of the row of the partition plates. A plurality of sheets are arranged in parallel with the partition plate so that their centers are located on the straight line, between the support plates and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan, wherein blades are passed in parallel to the straight line while being arranged in a circumferential direction of the support plate and the partition plate, and a rotation axis is extended on an outer surface of the support plate, A cross flow fan, wherein a thin disk thinner than the partition plate is provided on one side of the plate so as to be parallel to the partition plate one by one. 3. A plurality of circular partition plates having a hole in the center thereof are arranged in parallel with each other such that the centers of the plurality of circular partition plates are located on a straight line, and one circular support plate is provided on each end of the partition plate row. A plurality of sheets are arranged in parallel with the partition plate so that their centers are located on the straight line, between the support plates and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan, wherein blades are passed in parallel to the straight line while being arranged in a circumferential direction of the support plate and the partition plate, and a rotation axis is extended on an outer surface of the support plate, A plurality of thin disks thinner than the partition plate are provided between the plate and the partition plate adjacent to the support plate and between the partition plates at equal intervals so as to be parallel to the partition plate. A cross flow fan characterized by being used. 4. A plurality of circular partition plates having a hole in the center thereof are arranged in parallel with each other such that the centers of the plurality of circular partition plates are located on a straight line, and one circular support plate is provided at each end of the partition plate row. A plurality of sheets are arranged in parallel with the partition plate so that their centers are located on the straight line, between the support plates and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan, wherein blades are passed in parallel to the straight line while being arranged in a circumferential direction of the support plate and the partition plate, and a rotation axis is extended on an outer surface of the support plate, Between the partition plate and the partition plate adjacent to the support plate and between the partition plates, a plurality of thin disks thinner than the partition plate are provided at unequal intervals so as to be parallel to the partition plate. A cross flow fan. 5. A plurality of circular partition plates having a hole in the center thereof are arranged in parallel with each other such that the centers of the plurality of circular partition plates are located on a straight line, and one circular support plate is provided at each end of the partition plate row. A plurality of sheets are arranged in parallel with the partition plate so that their centers are located on the straight line, between the support plates and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan in which wings are passed in parallel to the straight line while being arranged in the circumferential direction of the support plate and the partition plate, and a rotation axis is extended on an outer surface of the support plate, at least one of A cross flow fan, wherein thin disks thinner than the partition plate are provided one by one on both sides of the partition plate adjacent to the support plate so as to be parallel to the partition plate. 6. A plurality of circular partition plates having a hole at the center are arranged in parallel with each other such that the centers of the plurality of circular partition plates are located on a straight line, and one circular support plate is provided at each end of the partition plate row. A plurality of sheets are arranged in parallel with the partition plate so that their centers are located on the straight line, between the support plates and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan, wherein blades are passed in parallel to the straight line while being arranged in a circumferential direction of the support plate and the partition plate, and a rotation axis is extended on an outer surface of the support plate, at least one of A cross flow fan, wherein a thin disk thinner than the partition plate is provided one by one on one side of the partition plate adjacent to the support plate so as to be parallel to the partition plate. 7. A plurality of circular partition plates having a hole in the center are arranged in parallel with each other such that the centers of the plurality of circular partition plates are located on a straight line, and one circular support plate is provided at each end of the partition plate row. A plurality of sheets are arranged in parallel with the partition plate so that their centers are located on the straight line, between the support plates and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan, wherein blades are passed in parallel to the straight line while being arranged in a circumferential direction of the support plate and the partition plate, and a rotation axis is extended on an outer surface of the support plate, at least one of A plurality of thin disks thinner than the partition plate are provided at equal intervals between the support plate and the partition plate adjacent to the support plate so as to be parallel to the partition plate. And a cross flow fan. 8. A plurality of circular partition plates having a hole at the center are arranged in parallel with each other such that the centers of the plurality of circular partition plates are located on a straight line, and one circular support plate is provided at each end of the partition plate row. A plurality of sheets are arranged in parallel with the partition plate so that their centers are located on the straight line, between the support plates and the partition plate adjacent to the support plate and between the partition plates. In a cross flow fan in which wings are passed in parallel to the straight line while being arranged in the circumferential direction of the support plate and the partition plate, and a rotation axis is extended on an outer surface of the support plate, at least one of Between the support plate and the partition plate adjacent to the support plate, a plurality of thin disks thinner than the partition plate are provided at unequal intervals so as to be parallel to the partition plate. Features a cross flow fan. 9. A fluid feeder comprising a blower comprising the cross flow fan according to claim 1 and a drive motor for driving the cross flow fan.